Engine-register connection



(No Model.) I

G. W. BROWN.

ENGINE REGISTER CUNNEGTION. No. 263,844. Patented Sept. 5, 1882.

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L/.L IL A i i* r-T g G a @id UNITED STATES PATENT OEEICE.

GILMAN W. BROVN, OF WEST NEVBURY, ASSIGNOR TO THE CROSBY STEAM GAGE AND VALVE COMPANY, OF BOSTON, MASSACHUSETTS.

ENGINE-REGISTER CONNECTION.

SPECIFICATION forming part of Letters Patent No. 263,844, dated September 5, 1882. Application filed May 1, 1882. (No model.)

To all rr/Lom it 'may concern:

Be it known that I, GILMAN W. BROWN, of lest Newbury, in the county of Essex, of the State of Massachusetts, have invented a new and useful improvement in mechanism for intermittently revolving the shaft of a steamengine counter or recorder, or apparatus for indicating the number of strokes made bythe piston of such engine in any given period of 1o time; and I do hereby declare the same to be described in the following specification and represented in the accompanying drawings, of which Figure l is a top view, and Fig. 2 a side ele- ;5 vation, audFig.3 a frontelevation, ofacounter with my improvement. Fig. 4is afront View, Fig. 5 a vertical and longitudinal section, and Fig. G aside elevation, on an enlarged scale, of the mechanism constituting my invention.

2o Fig. 7 is a front view of its movable notched sector, and Fig. 8 is a front view of its stationary cammed sector, to be described.

The engine recorder, or counterj as it is usually termed, shown at A, is in common use and well known, its construction constituting no part of my invention. Its operative shaft is shown at B, my said invention being to impart to such shaft its correct intermittent rotary motion, no matter what may be the length 3o of stroke of the piston. Vere the crank of such shaft to have a ratchet-and-pawl connection with the shaft, the extent of such rotary movement of the shaft would vary as the length of the stroke of the piston might vary.

Consequently the apparatus would be liable to register incorrectly. With my improvement the counter orregisterhecomes applicable generally, or to most steamengines, the length of stroke of the piston not governi-ng in any way 4o the extent of each advance rotary movement ofthe shaft, which is always constant and takes place during each stroke of the piston. The crank C is a lever, which, pivoted on the shaft B, turns freely thereon, and carries in a slot, a, in its shorter arm apawl, D, shaped as shown and pivoted to the said arm, the pivot being` represented at b. The said pawl extends through a notch, c, made in the periphery ot' a sector, E, fixed permanently on the shaft and alongside of the crank or lever. 5o Furthermore, the pawl extends beyond the said sector and into a camrned notch, d, made,

as represented, in a stationary sector, F, arranged as shown, and fastened to the case Cr of the counter. llhe said notch d terminates in two cams or inclined planes, cf, arranged as exhibited in Fig. S. A spring, g, suitably applied to the pawl, serves to force it upward and to admit of it moving downward.

From the above it will be seen that ou the 6o lever C being reciproeated ou the shaft the pawl, while in the notch c, will be caused to revolve the sector E, which, by being fastened to the shaft, will correspondingly revolve it; but as the pawl moves in the cammed notch d cach of the cams c and f of said notch will, as the pawl may pass along it, force the pawl out of the notch c and allow the lever to continue to move without causing rotary motion of the shaft. From this it will be seen that, no mat- 7o ter what the length of the stroke of the piston may be beyond what may be necessary to cause the pawl to move through the notch (the shaft will be revolved a like distance in each advance movement of the lever or crank, whereby the counter will be caused to correctly register or indicate the number of strokes made by the piston in any given period of time.

What I claim as my invention is as follows, 8o VIZI The combination of the stationary sector F, having the cammed notch d, with the notched sector E, tixed on the shaft B, and with the vibratory crank or lever C, applied to turn on S5 the shaft, and provided with the pawl l), to operate with the said two sectors as described, all being substantially and for the purpose as set forth.

G ILMAN V. BROWN.

Vitncsses:

R. H. EDDY, E. B. PRATT. 

